Stay or support with steps for producing concrete ceilings.



GHRISTIAN BRKER, OSEI KLEE & JEAN KLEE. STAY 0B. SUPPORT WITH STEPS FOR PRODUGING CONCRETE GEILINGS.

APPLICATION FILED APR.. 9. 1907.

Patented Dec. 8, 1908.

Inventars: iz.

14 4 /f /xf/f/H// 0066// 'UNITED STATES PATENT OFFICE.

CHRISTIAN BRKER, JOSEF KLEE, AND JEAN KLEE, OF COLOGNE, GERMANY.

STAY OR SUPPORT WITH STEPS FOR PRODUCING CON CRETE CEILIN GS.

i Specification-of Letters Patent.

Patented Dec. 8, 1908.`

Application filed April 9, 1907. Serial No. 367,171.

To all whom it 'may concern:

Be it known that we, CHRISTIAN BRKER, .loser Knee, and J naiv Knien, all subjects of the German En'iperor, residing at Cologneon-the-Rhine, Germany, have invented new and useful Improvements in Stays or Supports with Steps for Producing 'Concrete Ceilings, of which the following is a specification.

This invention has for its object a new ceiling support made of rammed cement, or

the like, which is to be used for self-supporting ceilings insteadof iron girders 'or wooden beams, and differs from the known ceiling supports of this kind in that respect that the size of the hollow spaces remaining between the single supports, as well as the height of the ceiling, can be regulated by using the neW supports, so that these supports can be equally well used with ceilings of different heights. To this end each ceiling support is provided on its lateral longitudinal faces with steplike retreats or taperings at different heights and of any form, which serve as supports for closing plates or arches of a vaulted ceiling at different heights.

The invention is illustrated on the accompanying drawing.

The ceiling supports a, as already said, form steps .71 on their vertical longitudinal faces, at ditlerent heights. The ceiling supports iliade of rammed cement are preferably provided on the inside with iron fillers consisting of cable wires c and (l or also band-iron c. The form of the fillers may vary, especially the band irons may, instead of being straight be of an undulated form. The band irons may also be provided with holes in order to effect a closer union with the cement. Such iron fillers need not be, as shown in the drawing, in the lower half only, but may eventually also be in 'the upper half, or in the middle, of the joists. (See the filler e, indicated by dotted lines in the second joist.

lThia steps o of the supports serve to support the closing plates f which maybe of any material, on the otherarches g. The main object of the plates f is to close the vhollow spaces remaining between the supports, so that no plastering m of the ceiling can enter into them from the bottom. In this case the plates f may be Xed along the sides by cement a. The plates which, as shown on .the drawing, are used in the two hollow spaces on the left may be oflterra cotta.

rest on the lower step I, of the supports a.

These terra cotta. plates are inserted in the manner indicated in the first hollow spacev by inserting the plate first from the bottom in the position indicated by dotted lines and turning it down thereupon. The next, terra cotta plate f innnediately adjoins the pre ceding one. -Below all the plates the plastering m is then put on. In order to make the latter adhere better, the bottom surfaces of the plates f may be roughened or provided withv recesses or grooves. But as shown in the fourth hollow space the bottom plate f, may also be of a shape that it rests with its ends on the steps I) and that its bottom sur stallations, for instance of gasand waterpipes and electric wires. But the plate f may also be turned upside do'wn and be resting on the lowest step, in which case there likewise remains a small hollow space between the plate and the plastering m ror installations. By thus placing the plates f above one another hollow spaces of any size may be formed between them for installa.

tions or ventilation.

The steps b further serve as supports for the ends of the arches f/ which may be made of any material, forinstanc'e of impregnated pasteboard, terra cotta, wire gauze, sheet metal, or the like. According to the height: of the ceiling to be produced the arch may be placed on different steps, for instance in the drawing it is placed between the lirst and second joist on a lower step than between the following supports, so that also the floor L is on a. lower level. Upon the arches g the concrete z' is rammed down.

The step form of the supports favors the sticking ot the concrete. In order to lstill increase the sticking of the same on the supports, the upper surfaces of the same may, as shown in the drawing on the'fourth support, be provided with recesses Je. But as shown on the third support, at the upper end of the same,

an additional step Z may' quite as Well be provided, which eventually may also serve to place the archon a still higher level.

Between the fourth and fifth suport in- -stead of the arch g a plate f3 has een put,

upon which .the concrete is then rammed. In this way the plates f can serve as closures at the bottom as Well as at the top.

Of course the form of the steps and the supports may vary, and likewise the number of steps on each support. y

What We claim as our invention and desire to secure by United States Letters Patent is In a ceiling, the combination with the base or facing, of cross piecessuitably spaced and having each on opposite sides a plurality of steps 0r shoulders at diiferent elevations, and supporting members for bridging said spaces .having ends adapted to rest on said shoul- 20` ders, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing Witnesses.

CHRISTIAN BURKER. JOSEF KLEE. JEAN KLEE.

Witnesses:

' BEssm F. DUNLAP,

Louis VANDORN. 

